New Super Mario Bros Wii Issue

Hello everyone!
I am on firmware 4.0U soft modded also with a d2pro mod chip. I can play the game just find through the backup launcher, but when I try playing the game through the disc channel I get an error message saying "Cannot read disc, please eject disc and restart the wii" I have already updated the IOS53 which I had been told would fix the issue but it did not..so I don't know what IOS I have to put in in order to finally make this work property. Thank you so much for your help!